JPS54124735A - Magnetic brush developing device - Google Patents

Magnetic brush developing device

Info

Publication number
JPS54124735A
JPS54124735A JP3214878A JP3214878A JPS54124735A JP S54124735 A JPS54124735 A JP S54124735A JP 3214878 A JP3214878 A JP 3214878A JP 3214878 A JP3214878 A JP 3214878A JP S54124735 A JPS54124735 A JP S54124735A
Authority
JP
Japan
Prior art keywords
developing
developing sleeve
attracted
sleeve
magnetic brush
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP3214878A
Other languages
Japanese (ja)
Inventor
Nobuo Kasahara
Toshio Nakahara
Hidetoshi Yano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP3214878A priority Critical patent/JPS54124735A/en
Publication of JPS54124735A publication Critical patent/JPS54124735A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)

Abstract

PURPOSE: To perform color developing well by disposing a plurality of developing powder containing vessels to a developing sleeve and using a cooling unit of specific constitution.
CONSTITUTION: The magnetic brush developing device is constituted by a developing sleeve 51, a plurality of developing units 52 thru 54 disposed around the same and a cooling unit 55 consisting of a magnet roll 93 approaching to and detaching from the developing sleeve 51 and a housing 95. Then, the developing powders of yellow, magenta and cyan in the developing powder containing vessles 60, 70, 80 agitated by vane wheels 62, 72, 82 are attracted to developing sleeves 61, 71, 81 by magnetic force, after which they are attracted on the developing sleeve 51 in brush form to develop the charge images of a photosensitive drum 1, after which they are scraped down into the vessels 60, 70, 80 by scraping-off plates 63, 73, 83, and further they are attracted and removed by the magnet roll 93 approached to the developing sleeve 51, whereby mutual mixing is prevented.
COPYRIGHT: (C)1979,JPO&Japio
JP3214878A 1978-03-20 1978-03-20 Magnetic brush developing device Pending JPS54124735A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3214878A JPS54124735A (en) 1978-03-20 1978-03-20 Magnetic brush developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3214878A JPS54124735A (en) 1978-03-20 1978-03-20 Magnetic brush developing device

Publications (1)

Publication Number Publication Date
JPS54124735A true JPS54124735A (en) 1979-09-27

Family

ID=12350815

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3214878A Pending JPS54124735A (en) 1978-03-20 1978-03-20 Magnetic brush developing device

Country Status (1)

Country Link
JP (1) JPS54124735A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5473646A (en) * 1977-11-25 1979-06-13 Ricoh Co Ltd Magnetic brush developing device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5473646A (en) * 1977-11-25 1979-06-13 Ricoh Co Ltd Magnetic brush developing device

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